Analysis of Visual Pathways in Glaucoma Patients Using a 3tesla-MRI (ENVOL)
|ClinicalTrials.gov Identifier: NCT01621841|
Recruitment Status : Completed
First Posted : June 18, 2012
Last Update Posted : December 19, 2013
Glaucoma is a neurodegenerative disease representing the second cause of blindness worldwide. IOP (Intra occular pressure) is the most common risk factor, but not the only one as it is observed for normal tension glaucoma. Some studies have reported lesions of the optical pathways on MRI examination MRI 3T (Magnetic Resonance Imaging 3 Telsa), by increasing spatial resolution and DTI (diffusion tensor Imaging)with fractional anisotropy could help us to analyze visual pathways and to determine the association with neurodegenerative diseases as Alzheimer.
The investigators propose to compare volume and structure of the visual pathways between glaucoma patients and healthy subjects matched on age and sex.
Glaucoma is a neurodegenerative disease characterized by loss of retinal ganglion cells, visual field deterioration and optic nerve cupping. Some studies have suggested that all the visual pathways could be damaged in glaucoma. Recently, a German study proved a significant reduction of volume of the optic radiations in glaucoma versus healthy subjects in MRI 3T. Some authors have also suggested that glaucoma could share similarities with the other neurodegenerative diseases like Alzheimer's disease. MRI 3T and DTI allow studying visual pathways with a high level of spatial resolution.Fractional anisotropy is a tag of microstructure.
|Condition or disease|
|Glaucoma Fractional Anisotropy|
|Study Type :||Observational|
|Actual Enrollment :||114 participants|
|Observational Model:||Case Control|
|Study Start Date :||June 2012|
|Primary Completion Date :||June 2013|
|Study Completion Date :||November 2013|
- fractional anisotropy [ Time Frame: Inclusion ]
- volume of retrochiasmatic grey matter [ Time Frame: Inclusion ]
- global atrophy [ Time Frame: inclusion ]
- hyper intensities white matter [ Time Frame: inclusion ]
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01621841
|Service d'ophtalmologie Hôpital Pellegrin|
|CHU de Bordeaux, Bordeaux, France, 33000|